public class Demo3 {

    public static void main(String[] args) {

        Object locker1 = new Object();
        Object locker2 = new Object();

        Thread t1 = new Thread(() -> {

            synchronized (locker1) {
//                try {
//                    Thread.sleep(1000);
//                } catch (InterruptedException e) {
//                    throw new RuntimeException(e);
//                }
                synchronized (locker2) {
                    System.out.println("t1 jieshu");
                }
            }
        });

        Thread t2 = new Thread(() -> {

            synchronized (locker2) {
//                try {
//                    Thread.sleep(1000);
//                } catch (InterruptedException e) {
//                    throw new RuntimeException(e);
//                }

                synchronized (locker1) {
                    System.out.println("t2 jieshu");
                }
            }
        });

        t1.start();
        t2.start();
    }
}
